Crodamide S
Octadecanamide
CAS: 124-26-5
Molecular Formula: C18H37NO
Crodamide S - Names and Identifiers
| Name | Octadecanamide |
| Synonyms | Amide T Armid 18 adogen42 AMIDE C18 Adogen 42 Stearamide Advawax 290 Crodamide S Stearoylamide Octadecanamide AKAWAX S-MICROBEADS |
| CAS | 124-26-5 |
| EINECS | 204-693-2 |
| InChI | InChI=1/C18H37NO/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2-17H2,1H3,(H2,19,20) |
Crodamide S - Physico-chemical Properties
| Molecular Formula | C18H37NO |
| Molar Mass | 283.49 |
| Density | 0.9271 (rough estimate) |
| Melting Point | 98-102°C(lit.) |
| Boling Point | 250-251°C12mm Hg(lit.) |
| Flash Point | 207.5°C |
| Water Solubility | 102μg/L at 20℃ |
| Solubility | Chloroform (Slightly, Sonicated), Methanol (Slightly) |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | Bright yellow particles |
| Color | White |
| BRN | 909006 |
| pKa | 16.61±0.40(Predicted) |
| Storage Condition | Refrigerator |
| Refractive Index | 1.432-1.434 |
| MDL | MFCD00008038 |
| Physical and Chemical Properties | This product is white or light yellow color-fading powder. After recrystallization in ethanol, it is a colorless leaf-like crystal. Soluble in hot ethanol, chloroform, ether, insoluble in cold ethanol, insoluble in water. The relative density is 0.96, the melting point is 108.5~109 ℃, and the boiling point is 250 ℃ (1 599.86). The lubricity is lower than the fat weight, and the persistence is shorter. Poor thermal stability, with initial coloring. With a small amount of higher alcohols (C16 ~ 18) can overcome the above disadvantages. |
| Use | Used as slip agent and release agent for PVC, polyolefin, polystyrene and other plastics |
Crodamide S - Risk and Safety
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 1 |
| RTECS | RG0182000 |
| HS Code | 29241990 |
Crodamide S - Reference Information
| LogP | 6.7 |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| overview | stearamide emulsion is a white emulsion, the product is non-toxic, non-polluting, non-hazardous, green and environmentally friendly. It is easily dispersed in water and has the characteristics of ultra-fine, low viscosity, good dispersion and compatibility. |
| application | stearic acid amide can be mainly used for ink, coating, leather coating, etc. to improve smoothness, abrasion resistance and anti-adhesion performance. It can also be used as textile post-treatment aid, paper coating, thermal paper sensitizer, etc. |
| use | this product is used as a lubricant and mold release agent for processing polyvinyl chloride, polyphenylene, urea-formaldehyde resin and other plastics, and has excellent external lubrication and mold release. It also has good transparency and electrical insulation. The general dosage for hard transparent extrusion molding is 0.3-0.8 parts. But the lubricity of this product is not as good as stearic acid. Short efficacy, poor thermal stability, and initial coloring. The above shortcomings can be overcome by combining with a small amount of higher alcohol. If the amount of resin is too large, it is easy to precipitate to the surface of the product, which affects the printability and transparency. This product can also be used as a polyolefin slip agent and film anti-blocking agent. It can also be used as an internal release agent and lubricant for natural rubber and synthetic rubber to improve the processability of rubber. Improve the dispersion effect of other additives such as pigments and give the product a good gloss. Used as oil-based drilling fluid emulsifier, lubricant for metal wire drawing. The commercially available stearamide usually contains palmitamide, which has no moisture absorption and good smoothness. It can stabilize the emulsion such as paraffin, improve the dispersion effect of pigments and dyes, and has weeping and slippery properties and mold release properties. Therefore, it can be used as surfactant, fiber oil agent, mold release agent, lubricant for taking vinyl chloride and urea formaldehyde resin, rubber compounding agent, pigment ink and color crayon compounding agent, etc. used as slip agent and release agent for PVC, polyolefin, polystyrene and other plastics used for lubrication and release agent for PVC, polystyrene and other plastics, with excellent external lubrication effect and release performance. It can also be used as an anti-blocking agent for polyolefin films, usually used in conjunction with oleamide erucamide. Compared with the commonly used inorganic anti-blocking agent (silica), it has the characteristics of not affecting the transparency of the product. It is used as an internal release agent and lubricant for synthetic rubber or natural rubber to improve the processing agent of the rubber, giving the product a good gloss. |
| Production method | The ammonium salt is formed by the reaction of stearic acid and ammonia, and then dehydrated. Or it is obtained by reacting stearate with liquid ammonia under high pressure. Put 1 mol of stearic acid into the reaction kettle for heating and melting. Under stirring, continue to raise the temperature to 200 ℃, and start to pass in ammonia. Ammonia is introduced from the bottom of the kettle to speed up the stirring speed and strengthen the contact between gaseous and liquid. By-product water and unreacted ammonia gas enter the recovery unit through the condensation system. When the introduced ammonia gas is equivalent to 2 times the mass fraction of stearic acid, take the gas sample for inspection. If the gas no longer contains water, the reaction reaches the end point. Stop the ammonia flow and discharge the material while it is hot. After dissolving with ethanol, add activated carbon to decolorize, filter while hot, cool and crystallize, wash the crystals with water, and dry the pure product. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:11:58
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